×Gasterhaworthia Guillaumin (Bull. Mus. Nation. Hist. Nat., Sér. 2, 3: 339, 1931). — AlooideaeLit: Cumming (1999); Mays (2009: ill. synopsis).

  • Incl. ×Haworthio-gasteria Kondo & Megata ex Megata (1943) (nom. inval., Art. H6.2).

  • Incl. ×Gasworthia Gates (1955) (nom. illeg., Art. 52.1).

  • Incl. ×Gasworthiopsis G. D. Rowley (2014).

= Gasteria × Haworthia. Rowley (1982: 76) lists 5 known combinations (1 cultivar, 4 formally named), and Mays (2009) presents short descriptions and illustrations of c. 30 more recently published cultivars.